UNICEF's report was released just days before the U.N. Climate Change Conference is set to begin in Morocco. The organization is urging world leaders to start taking steps to reduce air pollution in their countries.

According to CNN, UNICEF is asking lawmakers to reduce fossil fuel combustion, invest in energy efficiency, give more children access to the health care they need and keep schools away from factories and other sources of pollution.

About 7 million people around the world die from air pollution-related causes each year.